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    <p>The field Settings.jdbcBatchSize seems to not be used, but the actual configuration is used in other places. I downloaded the source for hibernate-core, and through a textual search could find Environment.STATEMENT_BATCH_SIZEbeing used in some places.</p> <p>Take a look at org.hibernate.engine.jdbc.batch.internal.BatchBuilderImpl.java</p> <p>Results from the textual search</p> <pre><code>Search "STATEMENT_BATCH_SIZE" (23 hits in 22 files) C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\cfg\AvailableSettings.java (1 hit) Line 190: public static final String STATEMENT_BATCH_SIZE = "hibernate.jdbc.batch_size"; C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\cfg\ExternalSessionFactoryConfig.java (1 hit) Line 281: setUnlessNull( props, Environment.STATEMENT_BATCH_SIZE, jdbcBatchSize ); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\cfg\SettingsFactory.java (1 hit) Line 114: int batchSize = ConfigurationHelper.getInt(Environment.STATEMENT_BATCH_SIZE, properties, 0); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\AbstractTransactSQLDialect.java (1 hit) Line 125: getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, NO_BATCH); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\Cache71Dialect.java (2 hits) Line 258: getDefaultProperties().setProperty( Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE ); Line 259: //getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, NO_BATCH); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\CUBRIDDialect.java (1 hit) Line 76: getDefaultProperties().setProperty( Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE ); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\DB2Dialect.java (1 hit) Line 177: getDefaultProperties().setProperty( Environment.STATEMENT_BATCH_SIZE, NO_BATCH ); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\H2Dialect.java (1 hit) Line 191: getDefaultProperties().setProperty( AvailableSettings.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE ); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\HSQLDialect.java (1 hit) Line 219: getDefaultProperties().setProperty( Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE ); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\InterbaseDialect.java (1 hit) Line 59: getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, NO_BATCH); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\JDataStoreDialect.java (1 hit) Line 60: getDefaultProperties().setProperty( Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE ); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\MckoiDialect.java (1 hit) Line 81: getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, NO_BATCH); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\MimerSQLDialect.java (1 hit) Line 136: getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, "50"); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\MySQLDialect.java (1 hit) Line 182: getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\Oracle8iDialect.java (1 hit) Line 200: getDefaultProperties().setProperty( Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE ); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\Oracle9Dialect.java (1 hit) Line 87: getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\PostgreSQL81Dialect.java (1 hit) Line 154: getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\SAPDBDialect.java (1 hit) Line 136: getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\TeradataDialect.java (1 hit) Line 110: getDefaultProperties().setProperty( Environment.STATEMENT_BATCH_SIZE, NO_BATCH ); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\dialect\TimesTenDialect.java (1 hit) Line 84: getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\engine\jdbc\batch\internal\BatchBuilderImpl.java (1 hit) Line 55: size = ConfigurationHelper.getInt( Environment.STATEMENT_BATCH_SIZE, configurationValues, size ); C:\Documents and Settings\cfweber\Desktop\hibernate\core\org\hibernate\engine\jdbc\batch\internal\BatchBuilderInitiator.java (1 hit) Line 55: ConfigurationHelper.getInt( Environment.STATEMENT_BATCH_SIZE, configurationValues, 1 ) </code></pre>
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    1. COYou are referring to the fields/properties that relate to hibernate.jdbc.fetch_size configuration. As I'm digging for insert/update performance, I'm trying to figure out is how useful *hibernate.jdbc.batch_size* is.
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    2. COIndeed, my bad, need more coffee
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    3. COI edited my answer with, well, an actual answer :-)
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